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</o:shapelayout></xml><![endif]--></head><body lang=KO link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=EN-US>I realized the IOMMU mapping is done with dma_alloc_ or dma_map_..<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>It’s so basic (I have read <a href="https://www.kernel.org/doc/Documentation/DMA-API-HOWTO.txt">https://www.kernel.org/doc/Documentation/DMA-API-HOWTO.txt</a> ) but I forgot.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Chan Kim<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal align=left style='text-align:left;text-autospace:ideograph-numeric ideograph-other;word-break:keep-all'><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> ckim@etri.re.kr <ckim@etri.re.kr> <br><b>Sent:</b> Wednesday, September 29, 2021 4:15 PM<br><b>To:</b> kernelnewbies@kernelnewbies.org<br><b>Subject:</b> does dma_alloc_coherent setup iommu page table?<o:p></o:p></span></p></div></div><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Hello all,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>When the driver calls dma_alloc_coherent for a device, and if the device uses iommu, is the table entry for the iommu setup for the dma_handle?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Seeing the struct device has something related to iommu, I guess so..<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Any help appreciated.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Chan Kim<o:p></o:p></span></p></div></div></body></html>